* {
  margin: 0;
  padding: 0;
}

html {
  height: 100%;
  background-color: #000;
}

body {
  display: flex;
  flex-flow: column nowrap;
  justify-content: center;
  align-items: center;
  align-content: center;
  height: 100%;
}

#MyCanvas {
  border: 1px solid #fff;
  margin-bottom: 30px;
  padding: 10px;
}

input {
  margin-top: 30px;
  width: 300px;
}